<!DOCTYPE html>
<!--
To change this license header, choose License Headers in Project Properties.
To change this template file, choose Tools | Templates
and open the template in the editor.
-->
<html>
    <head>
        <meta charset="UTF-8">
        <title></title>
    </head>
    <body>
       <?php
	$n=5;//金字塔的行数
		for($i=1;$i<=$n;$i++){//外层的for循环控制层数
			echo"<center>";	//居中
		for($j=1;$j<=2*$i-1;$j++)//内层的for循环控制每层*的个数
		{
			echo"*";//输出星号
		}
			echo"<br/>";//换行
}
?>

    </body>
</html>
